# 创建一个Person类型对象
class Person:
    pass


class Cat:
    pass


# 创建一个Dog类对象
class Dog:
    pass


# 编写一个Student类对象
class Student:
    pass


per = Person()

cat = Cat()

dog = Dog()

student = Student()

print(type(per), '\n', type(cat), '\n', type(dog), '\n', type(student))


print(per.__dict__)

